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# CITATION file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
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cff-version: 1.2.0
message: 'To cite package "PJCcalculator" in publications use:'
type: software
license: MIT
title: 'PJCcalculator: PROs-Joint Contrast (PJC) Calculator'
version: 0.1.3
doi: 10.32614/CRAN.package.PJCcalculator
abstract: Computes the Patient-Reported Outcomes (PROs) Joint Contrast (PJC), a residual-based
  summary that captures information left over after accounting for the clinical Disease
  Activity index for Psoriatic Arthritis (cDAPSA). PROs (pain and patient global assessment)
  and joint counts (swollen and tender) are standardized, then each component is adjusted
  for standardized cDAPSA using natural spline coefficients that were derived from
  previously published models. The resulting residuals are standardized and combined
  using fixed principal component loadings, to yield a continuous PJC score and quartile
  groupings. This package provides a calculator for applying those published coefficients
  to new datasets; it does not itself estimate spline models or principal components.
authors:
- family-names: Meng
  given-names: Ning
  email: nmeng2@jh.edu
- family-names: Kim
  given-names: Ji Soo
- family-names: Orbai
  given-names: Ana-Maria
- family-names: Zeger
  given-names: Scott L.
repository: https://lemonade0924.r-universe.dev
commit: c12f6ceda85a76c8e921be92d723493d73b460ab
date-released: '2025-09-21'
contact:
- family-names: Meng
  given-names: Ning
  email: nmeng2@jh.edu